Spring RTS Engine

I tryied to upload my game to springfiles.
The Filesize is 770 mb.
I watched the funny flashy icon spin, while process explorer told me how far everything was along.
Then i got this error message:
File upload error. Could not move uploaded file.

How can i circumvent this?
Constructive suggestions only please.

No, "use rapid, because awe inspiring tech is always also tech that solves your problems" replys please.
Thanks.

The Filesize is 770 mb.

Perhaps, this...

so there is bandwith, and a constant donation needed to upload bigger files?

I don't think it's the large filesize, I often get the same thing when I upload maps.

Try setting category properly to Spring Engine / Games / Whatever before beginning upload.